Radar sensor



FIG. 1 is a right side view of the new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a top view thereof; and,

FIG. 6 is a front view thereof.

The broken lines depict portions of the article that form no part of the claimed design. 

CLAIM The ornamental design for a radar sensor, as shown and described. 